Boiler.



A. G. W001).

BOILER.

APPLIOAIIOH FILED MAY 14,1913.

Patented May 19, 1914.

3 SHEETS-BHEET 1.

W/T/VESSES INVENTOI? kKM /Qu/(LV ATTORNEY.

A. 0. WOOD BOILER.

ABPLIGATION FILED MAY 14, 1913.

INVENTOR BY .fllfiezgfhe fcg /f 04b ATTORNEY WITNESSES A, '3, WOOD.

BOILER.

ED MAY 14. 1913,

INVENTOR. zfllberl 6. 11 00 BY QLJ- 1M A TTORNE Y ALBERT 0. W001), or PHILAbnLrHIA, rnmtsrnvam.

BOILER.

Specification of Letters Patent.

Patented May 19, 11914.

Application filed May 14, 1913. Serial No. 767,511.

To all whom it may concern:

Be it known that'I, ALBERT O. Woon, a citizen of the United States, residing in the city of Philadelphia, county of Philadelphia, and State of'Pennsylvania, have invented certain Improvements in Boilers, of which the following is a specification.

My invention is an upright water tube boiler designed to provide very rapid Circulation, high capacity and efliciency; to secure an economical use of space with ready accessibility of parts for observation, cleaning and repairing; to permit the ready removal and insertion of tubes, as well as to prevent deposits in the tubes or secure automatic cleaning, and to provide a design that will lend itself peculiarly to the provision of an efficient furnace construction.

The boiler comprises one or more upper shells and one or'more lower shells in combination with upright sets of tubes having their lower ends set in the lower shell mechanism and their upper ends set in headers 5 connected with an upper shell mechanism, the upper and lower shell mechanism preferably being connected by a conduit or conduits completing the circuit or circuits. The

parts are arranged so as to substantially Z the headers 4 in which are set the upper 1 ends of the respective sets of tubes 3 and j the upper shells or drums 5 connected with g the respective headers 41- by thenipples 6 and 3 with the drums l by the downcomers 7, the latter being connected by a pipe 8. A shell .or drum 9 is connected with the drums 5 jby the conduits 10 and with the tops of two sets of oppositely inclined substanftially upright sets of tubes 11 which have 5 their lower ends connected with tive shells 0r drums 12, the latter being connected by the conduits 13 with the pipe .8. Complementary sets of tubes 14 have surround the furnace proper.

The boiler is preferably provided with water circulating elements comprising upright tubes connecting upper shell mechanism with lower shell mechanism, which tubes form a combustion chamber and provide substantially upright gratesbetween which fuel is held and distilled or burned with resulting eflicient generation of steam. As in most large boiler plants there is basement space under the fire room floor, utilized merely for the removal of ashes from the ash pits or hoppers underneath the grates, with large waste of such space, and as it is undesirable to set boilers high above the the respective drums 5, their lower ends be fire room floor, it is a desideratum that this space should be utilized and the head room usually required reduced, which is characteristic of my improvements, as is also the avoidance of the usual defects of vertical boilers in the use of water columns set so high above the fire floor that it is almost impossible to see them therefrom, so that galleries are necessarily provided. In ver tical boilers new in use it is very difiicult bottom connections for to clean, remove and replace tubes, which are objections overcome by my construction.

The characteristic features of my invention are fully disclosed in the following description and the accompanying drawings in illustration thereof.

In the drawings Figure 1 is a vertical sectional View of a boiler embodying my improvements; Fig. 2 is a sectional view taken on the line 2-2 of Fi 1; Fig. 3 is a vertical sectional view ifiustrating a modified construction; Fig. 4 is a sectional view taken on the line ltof Fig. 3; Fig. 5 is a vertical sectional view illustrating a further modification in the construction; Fig. 6 is a broken vertical sectional view illustrating a modification in the the main tubes; and Fig. 7 is a broken vertical sectional view illustrating a modification in the top connections of the main tubes.

The boiler, as illustrated in Figs. 1 and 2 of the drawings, -comprises the lower shells or drums 1 connected by a pipe or pipes 2,

or sets of tubes 3 having their lower ends set in the respective drums I,

the respectheir upper ends curved and connected with ing connected with the respective shells or drums 15 which are connected with the downcomers 7. Two sets of tubes 16 have their respective upper ends connected with the drums 5 and their lower ends connected with the shells or drums 17 which are connected with the downcomers 7 Conduits 18 connect the steam spaces of the drum 5 -whose water spaces are eoiii'it'ed with the ithe oppositely inclined substantially up- Q right banks water circulating system, as heretofore described.

This boiler is peculiarly adapted for the utilization of the heat obtained from fuel fed by the duct 19 between the drums 5 to the substantially upright chambers having grates between the upper ends of the sets of tubes 3 formed by the respective sets of tubes 11 and 14 through which air is drawn from the passages 21 between the tubes 14 and 16 to the combustion chamber 22, formed by the tubes 11 and containing the grate 23, from which chamber gases pass between the tubes 11 and 14 through the chambers 20 to the chambers 24 (lying within the parts 3, 5, 6, 7, 14, 15, 16 and 17 and having the bottom door 24*) and thence be tween the battles 3 and 3 downwardly along the tubes 3 and over the drums 1 to ence to the fire floor as to provide ready access to the parts. It will be understood that this arrangement of the parts of the circulating system provides facility for the collection of ashes and other waste products which fall from the chambers 20, 22 and 24 to the hopper 30, whence they can be delivered to the car 31 movable over a track or floor 32 between the lower ends of the sets of tubes 3.

As illustrated in Figs. 3 and 4, the several partsS, 9, 10, 11, 12, 13, 14, 15,16, and 17 of the previous construction can be omitted, when the tubes 3, headers 4, drums 5 and nipples 6 enter into the formation of the primary combustion chamber 33 provided with the grate 34. The tubes 3 have their lower ends set in the modified shells or drums 1 provided with the flat sheets 1". in which the tubes are set, the drums being connected by the pipe 2. These sheets are reinforced by braces 1 hearing at the edges of the sheets within the drums and having studs 1 therein which bear against the sheets between the tubes. In this construction, the water flows downwardly from the drums 5 through the pipes 7 to the drums 1, thence upwardly through the tubes 3 to the headers 4 and thence through the nipples 6 to the drums 5, the steam spaces of which are connected by the pipes 18". The gases from the primary combustion chamber 33 flow in contact with the drums 5, nipples 6, headers 4, tubes 3 and drums 1 to the flue 25.

As illustrated in Fig. '5, the drums 1', connected by the pipe 2, are connected by the tubes 3 with headers 4, and one of the headers is connected with a shell or drum 5 by nipples 6 while the other header is connected by nipples 6" with a drum or shell 9 which is connected by the pipe 10 with the drum 5. Inclined tubes 11, preferably having their upper sections bent to ward the vertical. connect the drum 9' with a shell or drum 12, and inclined tubes 14, preferably having their upper sections bent across the vertical, connect the drum 5' with a shell or drum 15. The tubes 11 and 14 form a substantially upright chamber 20', expanding from a median section toward its top and bottom, to which fuel is fed through the duct 19 and in which such fuel is distilled. the expansion at the top of this chamber facilitating feeding and the expansion at the bottom providing compensating space for the swelling of the fuel as it colres. A combustion chamber 22, beneath the tubes 11, provided with a grate 23, upon which fuel. dropping through the grate formed by the tubes 11, will fall and upon which fuel may be charged through end doors. A hopper 30 receives ashes ground from the bottom of the chamber 20' by the rcvoluble bar 23, ashes dropping through the grate 23", and ashes and soot delivered from the chamber 24 through its bottom door 24 adjacent to the drum 15. Air flows through the grate 23, and through the passage 21, between the tubes 14 and the tubes 16 and drum 17 (connected with the drum 5) downwardly through the grates formed by the tubes 11 and 14, to the chamber 22, and gaseous products of combustion flow from the chamber 22 between the tubes 11, through the fuel in the lower part of the chamber 20, between the tubes 14, through the chamber 24 beneath the drum 5, nipples 6 and headers 4, between the wall 3 and the baflie 3 downwardly along the tubes 3 lying between them, over the drums 1, upwardly along the tubes 3 between the bafiies 3 'and 3 to the corresponding header 4, and downwardly between the battle 3 and the bathe 3 to the outlet passage 25 between the walls 28 which support the tubes 3. In this construction, the heated water and steam flow upwardly through the tubes 3 having their upper ends subject to the highest temperature. thence through the corresponding header 4 and tubes 6 to the drum 5'. lVater flows from the drum 5 downwardly through the conduit 10', drum 9, nipples 6 and the corresponding header 4 and tubes 3 to the drum.1, and thence through the pipe 2 to the drum 1' connecting the bottom-of the tubes 3 first specified, the gases and water thus circulating in opposite directions.

As illustrated in Fig. 6, the lower ends of the two sets of tubes 3 may be connected with a shell in the form of a water box 1", conveniently an arch supported at the crown by the I-beain E33 and at the. extremities or springing points by nipples F56 connecting. the box with shells or drums El? supported by the walls 28.

As illustrated in Fig. 7, the tops of the tubes 3, 11 and ti may be connected with sectional headers 38 having their ends connected with the box 39 conncctedby a nipple 40 with the drum 5'.

It will be understood that this boiler lends itself peculiarly to sectional working and to working elliciently at low rates. That is to say, as illustrated in Fig. l, the damper etl may be swung into position for closing the exit from either of the passes containing the banks of tubes 3 to the flue 25 so that the other bank of tubes 3 receives substantially all the heat from the furnace gases.

The terms vertical and upright as used herein are to be understood to include all tubes having an inclination of less than forty-five degrees to a mathematically vertical lines. The divergence of the main sets of tubes from their lower ends upwardly admits of the desired disposition of the steam collectingmeans and the means for effecting the primary combustion of fuel between their upper ends while securing a desired compactness of construction below the place of primary combustion.

Having described my invention, I claim:

1. In a boiler, a plurality of sets of approximately upright tubes diverging from their lower ends upwardly, means connecting the bottoms of the tubes of said sets, headers connecting the tops of the tubes of said sets, means comprising a shell disposed between and connected with said headers and means for carrying fuel between said sets of tubes.

2. In a boiler, a plurality of upright sets of tubes, means comprising a bottom shell connecting the lower ends of the tubes, a plurality of headers connecting the upper ends of the tubes of the respective sets, one

or more shells between said headers and means for carrying fuel between said sets of tubes and connected therewith.

3. In a boiler, a plurality of sets of upright tubes, means for connecting the bot-- toms of said tubes, headers connecting the tops of the respective sets of tubes, means for connecting said headers, and means comprising tubes connected with said lastnamed means and forming a grate for carrying fuel in process of combustion between said sets of tubes and above the bottoms thereof.

per ends of the respective sets of tubes, means comprisinga pair of shells connecting the respective headers, two sets of oppositely inclined tubes having their upper ends connected with the respective upper shells, shells connecting the lower ends of the respective sets of tubes last named, a shell con nected with said upper shells, a pair of sets of substantially upright tubes having their upper ends connected with said shell, and shells connecting the bottoms of said last named tubes.

5. In a boiler, a set of approximately upright tubes, a shell connecting the bottoms of said tubes, a header connecting the tops of said tubes, means comprising a shell connecting said header with said shell first named, and means comprising two sets of approximately upright short tubes oppositely inclined to said first tubes and having their upper ends connected with said first named means, said short tubes forming a fuel holding compartment.

6. In a boiler, a plurality of sets of oppositely inclined approximately upright tubes, means comprising a bottom shell connecting the lower ends of said tubes, headers connecting the tops of said tubes, means comprising a top shell connecting said headers. means comprising a conduit connecting said first and second means, a plurality ol sets of oppositely inclined approximately upright tubes having their tops connected with said top shell, an intermediate shell connected with said top shell, a plurality of sets of oppositely inclined approxiinatcl v upright tubes having their tops connected with said intermediate shell, means for connecting said last named tubes with said third named means, and means whereby fuel is fed between said second and third named sets of tubes and distilled.

7. In a boiler, the combination of two sets of approxinuuely upright tubes. mechanism comprising a shell connecting the bottoms of said tubes, said sets of tubes diverging from the bottom upwardly, headers connecting the upper (lids ot the respective sets of tubes, mechanism comprising a top shell between and connected with the respective headers, connected conduits connected with the top and bottom shells, two sets of approximately upright tubes having their tops connected with said top shell and their bot-toms connected with said conduits, an intermediate shell connected with said top shell, two sets of oppositely inclined approximately upright tubes having their tops connected with said intermediate shell and their bottoms connected with said conduits, means for 4:. In a boiler, the Combination of two sets t of oppositely inclined approximately upright tubes, means comprising one. or more shells connecting the lower ends of said tubes, a pair of headers connecting the upleeding fuel between said second and third named sets of tubes, and a. combustion chamber between said third named sets of tubes.

8. In a boiler, mechanism comprising a plurality of sets of tubes and a shell connected therewith, in combination with mechanism comprising anv inclined setof tubes connected with said shell, disposed between said sets first named and adapted for holding fuel.

9. In a boiler, mechanism comprising a plurality of sets of upright tubes, in com bination with mechanism comprising a plurality of sets of inclined tubes disposed between said sets first named and adapted for holding fuel in process of combustion.

. 10..In a boiler, mechanism comprising two sets of oppositely inclined main tubes, in combination with mechanism comprising two sets of auxiliary tubes connected with and disposed between said sets of main tubes, said auxiliary tubes being adapted for holding fuel in process of combustion between the upper ends of said sets first named.

11. In a boiler, mechanism comprising two sets of main tubes diverging upwardly, in combination with mechanism comprising two sets of auxiliary tubes extending transversely to one set of main tubes and two sets of auxiliary tubes extending transversely to the other set of main tubes.

12. In a boiler, a set of upright tubes, a shell connecting the bottoms of said tubes, a header connecting the tops of said tubes, a shell connected with said header, means connecting said shells, and means comprising tubes connected with said second named shell and adapted for carrying fuel in process of combustion above the median parts of said tubes first named.

13. In a boiler furnace, a firing floor, a chamber extending below said floor, a generator having a steam collecting shell above said floor and tubes in said chamber extending below said floor, means below said shell and above the lower ends of said tubes for holding fuelin process of combustion, and means for carrying gaseous products of combustion from said fuel downwardly along said tubes.

14. In a boiler furnace, a firing floor, a chamber extending below said floor, oppositely inclined substantially upright banks '15. In a boiler furnace, banks of substantially upright water tubes, a grate be tween said banks above the lower ends thereof, and means for carrying gaseous products of combustion evolved from fuel on said grate downwardly along one or more of said banks of tubes.

16. In a boiler furnace, banks of substantially upright tubes, bafiies on said banks, a grate between said baffles above the lower ends of said tubes, and means coacting with said bafiies whereby gaseous products of combustion are carried along said tubes.

17. In a boiler furnace, the combination which comprises a fuel chamber, means for feeding fuel to said chamber, means for directing green gases evolved from fuel downwardly through said chamber to further the combustion of the same, water circulating means below said chamber, and means for carrying gaseous products of combustion from said chamber upwardly and then downwardly in contact with said water circulating means.

In testimony whereof I have hereunto set my hand this 12th day of May, 1913, in the presence of the subscribing witnesses.

ALBERT C. WOOD.

Witnesses Joe. G. DENNY, Jr., Geo. A. CUNNEY. 

